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package org.crosswire.sword.orb;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.StringWriter;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSessionBindingListener;
import javax.servlet.http.HttpSessionBindingEvent;
import java.util.Vector;
import java.util.Hashtable;
import java.util.Date;
import java.util.Properties;
public class SwordOrb extends Object implements HttpSessionBindingListener {
public static Properties config = null;
public static String ORBEXE = "swordorbserver";
public static final int MAX_REMOTE_ADDR_CONNECTIONS = 20;
public static final int MAX_ACCESS_COUNT_PER_INTERVAL = 10;
public static final long MAX_ACCESS_COUNT_INTERVAL = 10 * 1000; // milliseconds
public static final long BLACKLIST_DURATION = 10 * 60 * 1000; // milliseconds
public static final String BIBLES = "Biblical Texts";
public static final String COMMENTARIES = "Commentaries";
public static final String LEXDICTS = "Lexicons / Dictionaries";
public static final String GENBOOKS = "Generic Books";
public static final String DAILYDEVOS = "Daily Devotional";
static org.omg.CORBA.ORB orb = org.omg.CORBA.ORB.init(new String[]{}, null);
static Hashtable clients = new Hashtable();
String ior = null;
String remoteAddr = null;
String localeName = null;
long lastAccessed = 0;
int intervalCount = 0;
long intervalStamp = 0;
long blacklistTill = 0;
private SWMgr attach() {
// assert IOR has been set
if (ior == null)
return null;
SWMgr retVal = null;
try {
System.out.println("attaching...");
org.omg.CORBA.Object obj = orb.string_to_object(ior);
retVal = SWMgrHelper.narrow(obj);
System.out.println("calling testConnection");
retVal.testConnection();
System.out.println("testConnection successful");
}
catch(Throwable e) {
// e.printStackTrace();
retVal = null;
System.out.println("failed in attach");
}
return retVal;
}
public SwordOrb(String remoteAddr) {
this.remoteAddr = remoteAddr;
}
// this doesn't seem to work. Never seems to get called for me
public void finalize () throws Throwable {
// shut down external process
try {
System.out.println("calling finalize.");
getSWMgrInstance().terminate();
}
catch (Exception e) {} // we know this doesn't return property cuz we killed the orb! :)
}
public void valueBound(HttpSessionBindingEvent httpSessionBindingEvent) {}
public void valueUnbound(HttpSessionBindingEvent httpSessionBindingEvent) {
try {
// throw new Exception("value unbound; showing stacktrace");
Vector orbs = (Vector)clients.get(remoteAddr);
int size = -1;
if (orbs != null) {
size = orbs.size();
orbs.remove(this);
}
System.out.println("calling valueUnbound. size before: " + size + "; size after: "+orbs.size());
getSWMgrInstance().terminate();
}
catch (Exception e) {} // we know this doesn't return properly cuz we killed the orb! :)
// catch (Exception e) {e.printStackTrace();} // we know this doesn't return properly cuz we killed the orb! :)
}
private static void loadConfig(HttpServletRequest request) {
try {
config = new Properties();
File propName = new File(request.getSession().getServletContext().getRealPath("/WEB-INF/swordweb.properties"));
if (propName.exists()) {
FileInputStream propFile = new FileInputStream(propName);
config.load(propFile);
propFile.close();
}
}
catch (Exception e) { e.printStackTrace(); }
ORBEXE = config.getProperty("orbexe", "swordorbserver");
}
private void startOrb() {
try {
// start external process
java.lang.Process p = Runtime.getRuntime().exec(ORBEXE);
InputStream is = p.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader input = new BufferedReader(isr);
String line;
line = input.readLine();
// retVal = p.waitFor();
ior = line;
System.out.println("Launched ORB, IOR: " + ior);
}
catch (Exception e) {e.printStackTrace();}
}
void checkAccessAbuse() throws Exception {
if ((blacklistTill > 0) && (System.currentTimeMillis() < blacklistTill)) {
throw new Exception("You're an abuser and have been blacklisted till " + new Date(blacklistTill));
}
if (++intervalCount > MAX_ACCESS_COUNT_PER_INTERVAL) {
if (System.currentTimeMillis() < intervalStamp + MAX_ACCESS_COUNT_INTERVAL) {
// abuser
blacklistTill = System.currentTimeMillis() + BLACKLIST_DURATION;
}
intervalStamp = System.currentTimeMillis();
intervalCount = 0;
}
}
public SWMgr getSWMgrInstance() throws Exception {
lastAccessed = System.currentTimeMillis();
checkAccessAbuse();
SWMgr retVal = null;
try {
System.out.println("trying to attach to running ORB");
retVal = attach();
}
catch(Exception e) {
// e.printStackTrace();
retVal = null;
}
if (retVal == null) {
try {
System.out.println("no ORB running; trying to launch");
startOrb();
System.out.println("trying to attach to newly launched ORB");
retVal = attach();
if (retVal != null) {
if (localeName != null) {
retVal.setDefaultLocale(localeName);
}
}
}
catch(org.omg.CORBA.SystemException e) {
e.printStackTrace();
}
}
return retVal;
}
public static void setSessionLocale(String localeName, HttpServletRequest request) throws Exception {
request.getSession().setAttribute("SwordOrbLocale", localeName);
SWMgr mgr = getSWMgrInstance(request);
if (mgr != null) {
mgr.setDefaultLocale(localeName);
}
}
public static SwordOrb getSessionOrb(HttpServletRequest request) throws Exception {
if (config == null) loadConfig(request);
HttpSession session = request.getSession();
SwordOrb orb = (SwordOrb)session.getAttribute("SwordOrb");
String remoteAddr = request.getRemoteAddr();
if (orb == null) {
System.out.println("No ORB found in session; constructing a new instance");
Vector orbs = (Vector)clients.get(remoteAddr);
if (orbs == null) {
orbs = new Vector();
clients.put(remoteAddr, orbs);
}
if (orbs.size() < MAX_REMOTE_ADDR_CONNECTIONS) {
orb = new SwordOrb(remoteAddr);
orbs.add(orb);
String locName = (String)session.getAttribute("SwordOrbLocale");
if (locName != null)
orb.localeName = locName;
session.setAttribute("SwordOrb", orb);
}
else throw new Exception("Max Remote Addr Connections from: ["+remoteAddr+"]");
}
else {
System.out.println("ORB found in session");
}
return orb;
}
public static SWMgr getSWMgrInstance(HttpServletRequest request) throws Exception {
SwordOrb orb = getSessionOrb(request);
SWMgr mgr = orb.getSWMgrInstance();
return mgr;
}
public static void main(String args[]) throws Exception {
SWMgr mgr = new SwordOrb("127.0.0.1").getSWMgrInstance();
System.out.println("PrefixPath: " + mgr.getPrefixPath());
System.out.println("ConfigPath: " + mgr.getConfigPath());
ModInfo[] modInfoList = mgr.getModInfoList();
System.out.println("sequence size: " + modInfoList.length);
SWModule module;
/*
for (int i = 0; i < modInfoList.length; i++) {
System.out.println(modInfoList[i].name + ": " + modInfoList[i].category + ": " + modInfoList[i].language);
module = mgr.getModuleByName(modInfoList[i].name);
module.setKeyText("jas1:19");
System.out.println(module.getRenderText());
}
*/
module = mgr.getModuleByName("WHNU");
module.setKeyText("rev.22.21");
System.out.println(new String(module.getRawEntry().getBytes("iso8859-1"), "UTF-8"));
/*
boolean lucene = module.hasSearchFramework();
SearchHit[] searchResults = module.search("God love world", (lucene)?SearchType.LUCENE:SearchType.MULTIWORD, 0, "");
for (int i = 0; i < searchResults.length; i++)
System.out.println(searchResults[i].key);
*/
}
}
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